(19)

(11)

EP 4 466 239 A1

(12)

(43) Date of publication: 27.11.2024 Bulletin 2024/48 (21) Application number: 23702648.9 (22) Date of filing: 18.01.2023

(51) International Patent Classification (IPC):  C04B 28/02(2006.01) (52) Cooperative Patent Classification (CPC): C04B 28/02   C-Sets: C04B 28/02, C04B 14/06, C04B 14/26; (86) International application number: PCT/GB2023/050085 (87) International publication number: WO 2023/139359 (27.07.2023 Gazette 2023/30)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 19.01.2022 GB 202200676 (71) Applicant: Imperial College Innovations Limited London SW7 2AZ (GB)	(72) Inventors: DRAPER, Samuel London SW7 2AZ (GB) SHANKS, Barnaby London SW7 2AZ (GB) CHEESEMAN, Christopher London SW7 2AZ (GB) WONG, Hong London SW7 2AZ (GB) (74) Representative: Heller, Benjamin Henry et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)